Documentation

Use the ''minimal standard'' Lehmer generator to quickly generate some random
numbers with reasonable statistical properties. By ''reasonable'' we mean good
enough for games and test data, but not cryptography or anything where the
quality of the randomness really matters.

By nature of the algorithm, the maximum value in the output is clipped
to (valMin + 2^31 - 1)

From ''Random Number Generators: Good ones are hard to find''
Stephen K. Park and Keith W. Miller.
Communications of the ACM, Oct 1988, Volume 31, Number 10.